package cn.openea.perpartner.meily.aspect;

import cn.hutool.core.util.StrUtil;
import cn.hutool.http.useragent.UserAgent;
import cn.hutool.http.useragent.UserAgentUtil;
import cn.openea.perpartner.common.core.manager.AsyncManager;
import cn.openea.perpartner.common.core.utils.ServletUtils;
import cn.openea.perpartner.common.core.utils.StringUtils;
import cn.openea.perpartner.common.core.utils.ip.IpUtils;
import cn.openea.perpartner.common.core.utils.spring.SpringUtils;
import cn.openea.perpartner.meily.util.UserContext;
import cn.openea.perpartner.meily.web.entity.OperLog;
import cn.openea.perpartner.meily.web.service.IOperLogService;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.*;
import org.aspectj.lang.reflect.CodeSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.NamedThreadLocal;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.TimerTask;

/**
 * @author Weird077
 * @description TODO
 * @date 2023-03-21 12:11
 */
@Aspect
@Component
public class GlobalAspect {
    private static final Logger log = LoggerFactory.getLogger(GlobalAspect.class);
    /**
     * 计算操作消耗时间
     */
    private static final ThreadLocal<Long> TIME_THREADLOCAL = new NamedThreadLocal<>("Response Time");

    @Pointcut("execution(* cn.openea.perpartner.meily.web.controller.*.*(..))")
    public void logPointcut() {

    }

    @Before("logPointcut()")
    public void beforeLog(JoinPoint joinPoint) {
        TIME_THREADLOCAL.set(System.currentTimeMillis());
    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "logPointcut()", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Object jsonResult) {
        handleLog(joinPoint, null, jsonResult);

    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e         异常
     */
    @AfterThrowing(value = "logPointcut()", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Exception e) {
        handleLog(joinPoint, e, null);
    }

    protected void handleLog(final JoinPoint joinPoint, final Exception e, Object jsonResult) {
        try {
            // *========数据库日志=========*//
            OperLog operLog = new OperLog();
            operLog.setStatus(0);
            // 请求的地址
            operLog.setOperIp(IpUtils.getIpAddr());
            operLog.setOperUrl(ServletUtils.getRequest().getRequestURI());
            operLog.setUserId(UserContext.getUserId());
            operLog.setNickName(UserContext.getUserName());
            if (e != null) {
                operLog.setStatus(1);
                operLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName + "()");
            // 设置请求方式
            operLog.setRequestMethod(ServletUtils.getRequest().getMethod());
            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, operLog, jsonResult);
            // 设置消耗时间
            operLog.setResponseTime(System.currentTimeMillis() - TIME_THREADLOCAL.get());
            // 保存数据库
            AsyncManager.me().execute(recordOperLog(operLog));
        } catch (Exception exp) {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, OperLog operLog, Object jsonResult) throws Exception {
        UserAgent ua = UserAgentUtil.parse(ServletUtils.getRequest().getHeader("User-Agent"));
        operLog.setOperOs(ua.getOs().toString());
        operLog.setOperPlatform(ua.getPlatform().toString());
        operLog.setOperBrowser(ua.getBrowser().toString());
        // 获取参数的信息，传入到数据库中。
        setRequestValue(joinPoint, operLog);
        // 保存response，参数和值
        operLog.setJsonResult(StringUtils.substring(JSON.toJSONString(jsonResult), 0, 2000));
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param operLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, OperLog operLog) throws Exception {
        String requestMethod = operLog.getRequestMethod();
        Map<?, ?> paramsMap = ServletUtils.getParamMap(ServletUtils.getRequest());
        if (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod)) {
            String params = argsArrayToString(joinPoint);
            operLog.setOperParam(StringUtils.substring(params, 0, 2000));
            if (StrUtil.isBlank(operLog.getUserId())) {
                operLog.setUserId(JSON.parseObject(params).getString("userId"));
                operLog.setNickName(JSON.parseObject(params).getString("nickName"));
            }
        } else {
            operLog.setOperParam(StringUtils.substring(JSON.toJSONString(paramsMap), 0, 2000));
            if (StrUtil.isBlank(operLog.getUserId())) {
                operLog.setUserId((String) paramsMap.get("userId"));
                operLog.setNickName((String) paramsMap.get("nickName"));
            }
        }
    }

    /**
     * 请求参数转换成json字符串
     *
     * @param joinPoint 切点
     */
    private String argsArrayToString(JoinPoint joinPoint) {
        Map<String, Object> param = new HashMap<>();
        Object[] paramsArray = joinPoint.getArgs();
        String[] paramNames = ((CodeSignature) joinPoint.getSignature()).getParameterNames();
        for (int i = 0; i < paramNames.length; i++) {
            Object obj = paramsArray[i];
            if (!isFilterObject(obj)) {
                param.put(paramNames[i], obj);
            }
        }
        JSONObject obj = new JSONObject(param);
        return obj.toJSONString();
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o) {
        Class<?> clazz = o.getClass();
        if (clazz.isArray()) {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        } else if (Collection.class.isAssignableFrom(clazz)) {
            Collection collection = (Collection) o;
            for (Object value : collection) {
                return value instanceof MultipartFile;
            }
        } else if (Map.class.isAssignableFrom(clazz)) {
            Map map = (Map) o;
            for (Object value : map.entrySet()) {
                Map.Entry entry = (Map.Entry) value;
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }

    /**
     * 操作日志记录
     *
     * @param operLog 操作日志信息
     * @return 任务task
     */
    public TimerTask recordOperLog(final OperLog operLog) {
        return new TimerTask() {
            @Override
            public void run() {
                SpringUtils.getBean(IOperLogService.class).save(operLog);
            }
        };
    }
}
